<!--
 * @Author: your name
 * @Date: 2021-10-20 19:14:32
 * @LastEditTime: 2021-10-21 21:43:39
 * @LastEditors: Please set LastEditors
 * @Description: In User Settings Edit
 * @FilePath: \vue_test3\src\components\goods\Add.vue
-->

<template>
  <div>
      <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
      
       <!-- 卡片视图 -->
    <el-card>
        <!-- 提示区域 -->
          <el-alert
            title="添加商品信息"
            type="info"
            show-icon
            :closable="false">
        </el-alert>

        <!-- 步骤条 -->
        <el-steps :space="200" :active="activeIndex -0" finish-status="success" align-center>
            <el-step title="基本信息"></el-step>
            <el-step title="商品参数"></el-step>
            <el-step title="商品属性"></el-step>
            <el-step title="商品图片"></el-step>
            <el-step title="商品内容"></el-step>
            <el-step title="完成"></el-step>


        </el-steps>

        <!-- 表单验证 -->
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" label-position="top" >
        <!-- tab栏区域 -->
            <el-tabs v-model="activeIndex" :tab-position="tabPosition" :before-leave="beforeLeave" @tab-click="tabClicked">
                <el-tab-pane label="基本信息" name="0">
                    <el-form-item label="商品名称" prop="goods_name">
                    <el-input v-model="addForm.goods_name"></el-input>
                    </el-form-item>
                    <el-form-item label="商品价格" prop="goods_price">
                        <el-input v-model="addForm.goods_price" type="number"></el-input>
                    </el-form-item>
                    <el-form-item label="商品数量" prop="goods_number">
                        <el-input v-model="addForm.goods_number" type="number">></el-input>
                    </el-form-item>
                    <el-form-item label="商品重量" prop="goods_weight">
                        <el-input v-model="addForm.goods_weight" type="number">></el-input>
                    </el-form-item>
                    <!-- 商品分类 -->
                    <el-form-item label="商品分类" prop="goods_cat">
                        <!-- 级联选择器 -->
                        <el-cascader
                        v-model="addForm.goods_cat"
                        :options="catelist"
                        :props="{ value: 'cat_id',
                            label: 'cat_name',
                            children:'children',
                            expandTrigger: 'hover',
                            }"
                        ref="elcascader"
                        @change="goodsCateChange"></el-cascader>
                    </el-form-item>
                </el-tab-pane>
                <el-tab-pane label="商品参数" name="1">
                    <!-- 渲染表单的Item项 -->
                    <el-form-item :label="item.attr_name" v-for="item in manyTableData" :key="item.attr_id">
                        <!-- 复选框渲染 -->
                        <el-checkbox-group v-model="item.attr_vals">
                            <el-checkbox :label="cb" v-for="(cb,i) in item.attr_vals" :key="i" border></el-checkbox>
                        </el-checkbox-group>

                    </el-form-item>
                </el-tab-pane>
                <el-tab-pane label="商品属性" name="2">
                    <el-form-item :label="item.attr_name" v-for="item in onlyTableData" :key="item.attr_id">                    
                    <el-input v-model="item.attr_vals"></el-input>
                    </el-form-item>
                </el-tab-pane>
                <el-tab-pane label="商品图片" name="3">
                    <el-upload
                    :on-success="uploadSuccess"
                    :action="uploadImg"
                    :on-preview="handlePreview"
                    :on-remove="handleRemove"
                    list-type="picture"
                    :headers="headersObj">
                    <el-button size="small" type="primary">点击上传</el-button>
                    <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div>
                    </el-upload>

                </el-tab-pane>
                <el-tab-pane label="商品内容" name="4">
                    <!-- 富文本编辑器 -->
                    <quill-editor v-model="addForm.goods_introduce"></quill-editor>
                    <!-- 添加商品的按钮 -->
                    <el-button type="primary" class="addButton" @click="addGoods">添加商品</el-button>
                </el-tab-pane>
            </el-tabs>
        </el-form>

    </el-card>    

    <!-- 图片预览对话框 -->
        <el-dialog
        title="图片预览"
        :visible.sync="imgDialogVisible"
        width="40%"
        >
        <img :src="PreviewPath" width="100%">
        
        </el-dialog>


  </div>
</template>

<script>
import _ from 'lodash'

export default {
    created(){
        this.getCateList()
    },
    methods:{
        //获取商品分类
         async getCateList(){
           const {data:res}  =  await this.$http.get('categories')
            if (res.meta.status !==200) {
                return this.$message.error('获取分类列表错误')
            }
            // console.log(res.data)
            this.catelist = res.data
            // console.log(this.catelist)
        },

         //级联选择框选中时触发的函数
        goodsCateChange(){
                console.log(this.addForm.goods_cat)
            
        },

        //标签内的选中之后才可跳转
        beforeLeave(activeName,oldActiveName){
            // console.log('即将进入的标签页'+ activeName)
            // console.log('即将离开的标签页'+ oldActiveName)
            if (oldActiveName === '0' && this.addForm.goods_cat.length !==3) {
                this.$message.error('请选择商品分类')
                return false
            }
        },

        //Tab标签切换时触发函数
        async tabClicked(){
            if (this.activeIndex === '1') {
               const {data:res} =  await  this.$http.get(`categories/${this.addForm.goods_cat[2]}/attributes`,{params:{sel:'many'}})
               if (res.meta.status !==200) {
                   this.$message.error('获取动态参数错误')
               }
            //    console.log(res.data)
                res.data.forEach(item => {
                    item.attr_vals= item.attr_vals.length === 0 ? [] : item.attr_vals.split(',')
                    
                });
                this.manyTableData = res.data
            }else if (this.activeIndex === '2') {
                const {data:res} =  await  this.$http.get(`categories/${this.addForm.goods_cat[2]}/attributes`,{params:{sel:'only'}})
               if (res.meta.status !==200) {
                   this.$message.error('获取动态参数错误')
               }
               console.log(res.data)
               this.onlyTableData = res.data
            }
        },

        // 点击图片列表预览事件
        handlePreview(file){
            // console.log(file)
            this.PreviewPath = file.response.data.url
            this.imgDialogVisible = true
        },

        //图片移除事件
        handleRemove(file){
            console.log(file)
            // 1.获取将要删除图片的临时路径
            const filePath = file.response.data.tmp_path
            // 2.从pics数组中,找到这个图片对应的索引值
            const i = this.addForm.pics.findIndex(x => x.pic === filePath)
            // 3,调用数组的splice方法,吧图片信息对象,从pics数字中移除
            this.addForm.pics.splice(i,1)
            // console.log(this.addForm)
        },

        // 文件上传成功的钩子
            uploadSuccess(response){
                // console.log(response)
                // 1.拼接得到一个图片信息对象
                const picInfo = {pic:response.data.tmp_path}
                // 2.将图片信息对象,push到pics数组中
                this.addForm.pics.push(picInfo)
                // console.log(this.addForm)
            },

            // 添加商品
            addGoods(){
                this.$refs.addFormRef.validate(async valid =>{
                    if (!valid) {
                        return this.$message.error('请填写必填的表单项')
                    }
                    //执行添加的业务逻辑
                    const form = _.cloneDeep(this.addForm)
                    form.goods_cat = form.goods_cat.join(',')
                    //处理动态参数
                    this.manyTableData.forEach(item =>{
                        const newInfo = {attr_id:item.attr_id,attr_value:item.attr_vals.join(',')}
                        this.addForm.attrs.push(newInfo)
                    })

                    // 处理静态属性
                    this.onlyTableData.forEach(item =>{
                        const newInfo = {attr_id:item.attr_id,attr_value:item.attr_vals}
                        this.addForm.attrs.push(newInfo)
                        
                })
                form.attrs = this.addForm.attrs    
                // console.log(form)
                const {data:res} =  await this.$http.post('goods',form)
                if (res.meta.status !==201) {
                    return this.$message.error('添加商品错误')
                }
                this.$message.success('添加商品成功')
                this.$router.push('/goods')
            })
        }
    },
    data() {
        return {
            // 步骤图索引
            activeIndex:'0',

            // tag标签栏位置
            tabPosition: 'left',

            //表单数据
            addForm:{
                goods_name:'',
                goods_price:0,
                goods_number:0,
                goods_weight:0,
                goods_cat:[],
                // 图片数组
                pics:[],
                // 商品的详情介绍
                goods_introduce:'',

                attrs:[],
            },

            
            

            //表单验证
            addFormRules:{
                 goods_name:[
                { required: true, message: '请输入商品名称', trigger: 'blur' }
            ],
                goods_price:[
                { required: true, message: '请输入商品价格', trigger: 'blur' }
            ],
            goods_number:[
                { required: true, message: '请输入商品数量', trigger: 'blur' }
            ],
            goods_weight:[
                { required: true, message: '请输入商品重量', trigger: 'blur' }
            ],
            goods_cat:[
                { required: true, message: '请选择商品分类', trigger: 'blur' }
            ],
            },

            //获取商品分类数组
            catelist:[],

            //动态参数列表数据
            manyTableData:[],

            //静态参数列表数据
            onlyTableData:[],

            // 上传的图片保存后台地址
            uploadImg:'http://127.0.0.1:8888/api/private/v1/upload',

            //上传图片请求头
            headersObj:{
                Authorization : window.sessionStorage.getItem('token')
            },

            //图片预览保存的地址
            PreviewPath:'',

            //图片预览框的显示和隐藏
            imgDialogVisible:false
        }
    },
}
</script>

<style lang="less" scoped>
.el-checkbox{
    margin: 0 5px 0 0 !important
}

.addButton{
    margin-top: 10px;
}

</style>
